sayfirst-boundary

The in-process boundary. A governed program opens Boundary.request(...) around an effect; the decision lands before the body runs, or the body does not run.

This distribution holds no policy and decides nothing. It asks the control plane over a socket whose peer it verified, caches an allow as a grant for exactly the question it answers, and stops honouring that grant the moment any of four things happens: the connection carrying it ends, its lifetime runs out, the policy version it was issued under changes, or the control plane goes silent for a lifetime.

It publishes no exit codes. Outcomes leave as exceptions, and a caller that runs a process decides what to exit with.